A Note on Image Processing¶
TYPO3 CMS relies on ImageMagick or GraphicsMagic to generate on the fly images matching the specified sizes. If you do not see all expected images it could that neither ImageMagick nor GraphicsMagic are installed on your server or that your installation is not properly configured.
For more help on the topic, please refer to the Installation Guide.
You could also ask for help in the installation forums.